Which statements are correct about becquerel (bq) and gray (gy) units? check all that apply. gray units measure the number of disintegration’s of radioactive atoms over a period of time gray units measure the radiation dose absorbed by any material becquerel units measure the radiation dose absorbed by biological tissue becquerel units measure emitted radiation gray units measure radiation dose gray units measure biological risk

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)